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A disordered nanoparticle model for 6-line ferrihydrite 19 Aug 2013 | 09:01 pm
Much of the bioavailable and geochemically reactive iron in aerobic, circumneutral settings is frequently found in the form of nanoscale particles of a hydrated iron(III) oxyhydroxide phase known as f...
Behavior of gold in a magma at sulfide-sulfate transition: Revisited 19 Aug 2013 | 09:01 pm
We have investigated experimentally the partitioning of Au between solid and liquid sulfide phases and basaltic melts at 200 MPa, at redox conditions close to the sulfide-sulfate transition, over temp...
Mechanical spectroscopy in twinned minerals: Simulation of resonance patterns at high frequencies 19 Aug 2013 | 09:01 pm
Computer molecular dynamics (MD) simulations of dynamically driven twin structures reveal the main results of resonance ultrasonic spectroscopy (RUS) and dynamic mechanical analysis (DMA), namely the ...
Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup 19 Aug 2013 | 09:01 pm
Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, is a new mineral of the tourmaline supergroup. The holotype specimen originates from the locality of Osarara (Narok district, Kenya) and occurs in qu...
Experimental development of patch perthite from synthetic cryptoperthite: Microstructural evolution and chemical re-equilibration 19 Aug 2013 | 09:01 pm
In this study, deuteric coarsening of a lamellar cryptoperthite to a patch perthite has been experimentally induced for the first time. An homogeneous alkali feldspar, bulk composition Ab60Or40, was p...
Crystal structure of the high-pressure phase of calcium hydroxide, portlandite: In situ powder and single-crystal X-ray diffraction study 19 Aug 2013 | 09:01 pm
The crystal structure of a high-pressure phase of calcium hydroxide, Ca(OH)2 (portlandite), was clarified for the first time using the combination of in situ single-crystal and powder X-ray diffractio...
Diffusion of helium in natural monazite, and preliminary results on He diffusion in synthetic light rare earth phosphates 19 Aug 2013 | 09:01 pm
Diffusion of helium has been characterized in natural monazite and synthetic LREE phosphates. Polished slabs of natural monazite and flat growth faces of synthetic phosphates were implanted with 100 k...
Carboniferous inherited grain and age zoning of monazite and xenotime from leucogranites in far-eastern Nepal: Constraints from electron probe microan... 19 Aug 2013 | 09:01 pm
Chemical Th-U-total Pb isochron method (CHIME) of monazite and xenotime from three leucogranites in far-eastern Nepal revealed the presence of Carboniferous inherited grains of monazite and intense in...
Further investigation of the initial fission-track length and geometry factor in apatite fission-track thermochronology 19 Aug 2013 | 09:01 pm
The external detector method (EDM) is a widely used technique in fission track thermochronology (FTT) in which two different minerals are concomitantly employed: spontaneous tracks are observed in apa...
New constraints on the size of chondrite parent bodies 19 Aug 2013 | 09:01 pm
Carbonaceous chondrites make up a majority of asteroids in the asteroid belt, yet are relatively rare in meteorite collections at approximately 5%. The rare CR carbonaceous chondrites are providing a ...
